Rapoo H3070 Black 3.5mm Connector Circumaural Stereo Headset Wireless Type: RF Operating Time: Up to 6-hour Distance: 33 feet Headphone Frequency Response: 20Hz-20KHz Weight: 3 oz. Microphone Sensitivity: -42 dB Color: Black Package Contents: H3070 Wireless Headset Black 3.5mm Jack Wireless Transmitter Quick start guide USB Cable 3.5mm to USB audio cable